EP1081515A4 - OPTICAL FIBER - Google Patents

OPTICAL FIBER

Info

Publication number
EP1081515A4
EP1081515A4 EP98961490A EP98961490A EP1081515A4 EP 1081515 A4 EP1081515 A4 EP 1081515A4 EP 98961490 A EP98961490 A EP 98961490A EP 98961490 A EP98961490 A EP 98961490A EP 1081515 A4 EP1081515 A4 EP 1081515A4
Authority
EP
European Patent Office
Prior art keywords
optical fiber
fiber
optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98961490A
Other languages
German (de)
French (fr)
Other versions
EP1081515A1 (en
Inventor
Takatoshi Kato
Masashi Onishi
Eisuke Sasaoka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Publication of EP1081515A1 publication Critical patent/EP1081515A1/en
Publication of EP1081515A4 publication Critical patent/EP1081515A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
    • G02B6/03638—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 3 layers only
    • G02B6/03644—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 3 layers only arranged - + -
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02004—Optical fibres with cladding with or without a coating characterised by the core effective area or mode field radius
    • G02B6/02009—Large effective area or mode field radius, e.g. to reduce nonlinear effects in single mode fibres
    • G02B6/02014—Effective area greater than 60 square microns in the C band, i.e. 1530-1565 nm
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02214—Optical fibres with cladding with or without a coating tailored to obtain the desired dispersion, e.g. dispersion shifted, dispersion flattened
    • G02B6/02219—Characterised by the wavelength dispersion properties in the silica low loss window around 1550 nm, i.e. S, C, L and U bands from 1460-1675 nm
    • G02B6/02266—Positive dispersion fibres at 1550 nm
    • G02B6/02271—Non-zero dispersion shifted fibres, i.e. having a small positive dispersion at 1550 nm, e.g. ITU-T G.655 dispersion between 1.0 to 10 ps/nm.km for avoiding nonlinear effects
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03605—Highest refractive index not on central axis
    • G02B6/03611—Highest index adjacent to central axis region, e.g. annular core, coaxial ring, centreline depression affecting waveguiding
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
    • G02B6/03622—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only
    • G02B6/03627—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only arranged - +
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/028—Optical fibres with cladding with or without a coating with core or cladding having graded refractive index
    • G02B6/0283—Graded index region external to the central core segment, e.g. sloping layer or triangular or trapezoidal layer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
EP98961490A 1998-04-30 1998-12-22 OPTICAL FIBER Withdrawn EP1081515A4 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP12126298 1998-04-30
JP12126298 1998-04-30
PCT/JP1998/005824 WO1999057587A1 (en) 1998-04-30 1998-12-22 Optical fiber

Publications (2)

Publication Number Publication Date
EP1081515A1 EP1081515A1 (en) 2001-03-07
EP1081515A4 true EP1081515A4 (en) 2004-03-10

Family

ID=14806909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98961490A Withdrawn EP1081515A4 (en) 1998-04-30 1998-12-22 OPTICAL FIBER

Country Status (9)

Country Link
US (1) US6532331B1 (en)
EP (1) EP1081515A4 (en)
JP (1) JP4192424B2 (en)
KR (1) KR100362626B1 (en)
CN (1) CN1128378C (en)
AU (1) AU1686699A (en)
BR (1) BR9815860A (en)
CA (1) CA2330844A1 (en)
WO (1) WO1999057587A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6687441B1 (en) * 1999-03-12 2004-02-03 Corning Incorporated Large effective area waveguide fiber
RU2216755C2 (en) * 2000-02-25 2003-11-20 Дзе Фурукава Электрик Ко., Лтд. Low-dispersion optical fiber and optical transmission system with use of low-dispersion optical fiber
US7170214B2 (en) * 2003-09-08 2007-01-30 New Scale Technologies, Inc. Mechanism comprised of ultrasonic lead screw motor
US6940209B2 (en) * 2003-09-08 2005-09-06 New Scale Technologies Ultrasonic lead screw motor
US7309943B2 (en) * 2003-09-08 2007-12-18 New Scale Technologies, Inc. Mechanism comprised of ultrasonic lead screw motor
US7158705B2 (en) * 2004-08-30 2007-01-02 Corning Incorporated Optical fiber with birefringence and large mode field diameter
US7106934B1 (en) * 2005-06-30 2006-09-12 Corning Incorporated Non-zero dispersion shifted optical fiber
CN101393302B (en) * 2007-09-20 2016-08-03 杨春足 Light guide system co-constructed with light guide fiber and its coaxial semiconductor light source and photodetector
JP2013218247A (en) * 2012-04-12 2013-10-24 Shin Etsu Chem Co Ltd Optical fiber
CN106324749B (en) * 2016-10-20 2020-01-14 长飞光纤光缆股份有限公司 Few-mode optical fiber for amplifier
JP2019095466A (en) * 2017-11-17 2019-06-20 住友電気工業株式会社 Optical fiber and slant fiber grating
CN119620507A (en) * 2024-12-12 2025-03-14 吉林大学 Concentration and refractive index coordinated control gain balanced optical waveguide amplifier and preparation method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4033768C1 (en) * 1990-10-24 1991-07-18 Schott Glaswerke, 6500 Mainz, De Flexible optical fibre transmitting polychromatic beams - has refractive profile such that convergence angle at input and divergence angle at output are practically independent of wavelength
US5483612A (en) * 1994-10-17 1996-01-09 Corning Incorporated Increased capacity optical waveguide
EP0724171A2 (en) * 1995-01-26 1996-07-31 Corning Incorporated Large effective area waveguide fiber
JPH09159856A (en) * 1995-10-04 1997-06-20 Sumitomo Electric Ind Ltd Single-mode optical fiber and manufacturing method thereof
US5675690A (en) * 1995-07-07 1997-10-07 Alcatel Submarcom Dispersion-flattened single-mode optical waveguide with large effective mode surface area
US5684909A (en) * 1996-02-23 1997-11-04 Corning Inc Large effective area single mode optical waveguide

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4852968A (en) 1986-08-08 1989-08-01 American Telephone And Telegraph Company, At&T Bell Laboratories Optical fiber comprising a refractive index trench
JP2831363B2 (en) 1988-11-22 1998-12-02 株式会社フジクラ Optical fiber
FR2724234B1 (en) 1994-09-05 1997-01-03 Alcatel Fibres Optiques SINGLE-MODE OPTICAL FIBER WITH OFFSET DISPERSION
US5613027A (en) 1994-10-17 1997-03-18 Corning Incorporated Dispersion shifted optical waveguide fiber
JPH09258054A (en) * 1996-01-16 1997-10-03 Sumitomo Electric Ind Ltd Dispersion shifted fiber

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4033768C1 (en) * 1990-10-24 1991-07-18 Schott Glaswerke, 6500 Mainz, De Flexible optical fibre transmitting polychromatic beams - has refractive profile such that convergence angle at input and divergence angle at output are practically independent of wavelength
US5483612A (en) * 1994-10-17 1996-01-09 Corning Incorporated Increased capacity optical waveguide
EP0724171A2 (en) * 1995-01-26 1996-07-31 Corning Incorporated Large effective area waveguide fiber
US5675690A (en) * 1995-07-07 1997-10-07 Alcatel Submarcom Dispersion-flattened single-mode optical waveguide with large effective mode surface area
JPH09159856A (en) * 1995-10-04 1997-06-20 Sumitomo Electric Ind Ltd Single-mode optical fiber and manufacturing method thereof
US5684909A (en) * 1996-02-23 1997-11-04 Corning Inc Large effective area single mode optical waveguide

Non-Patent Citations (7)

* Cited by examiner, † Cited by third party
Title
HOLMES L M: "SPECIAL PROFILE NULLS FIBER DISPERSION AT TWO WAVELENGTHS", LASER FOCUS WORLD, PENNWELL PUBLISHING, TULSA, US, vol. 26, no. 2, 1 February 1990 (1990-02-01), pages 121, XP000100668, ISSN: 1043-8092 *
LI Y W ET AL: "TRIPLE-CLAD SINGLE-MODE FIBERS FOR DISPERSION SHIFTING", JOURNAL OF LIGHTWAVE TECHNOLOGY, IEEE. NEW YORK, US, vol. 11, no. 11, 1 November 1993 (1993-11-01), pages 1812 - 1819, XP000416677, ISSN: 0733-8724 *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 10 31 October 1997 (1997-10-31) *
See also references of WO9957587A1 *
SINICHI FURUKAWA ET AL: "DESIGN METHOD FOR SINGLE-MODE OPTICAL FIBERS WITH ZERO TOTAL DISPERSION AT WAVELENGTHS OF 1.3 M AND 1.55 M", ELECTRONICS & COMMUNICATIONS IN JAPAN, PART I - COMMUNICATIONS, SCRIPTA TECHNICA. NEW YORK, US, vol. 70, no. 1, 1987, pages 50 - 58, XP000541259, ISSN: 8756-6621 *
TEWARI R ET AL: "DISPERSION-SHIFTED DUAL-SHAPE CORE FIBERS: OPTIMIZATION BASED ON SPOT SIZE DEFINITIONS", JOURNAL OF LIGHTWAVE TECHNOLOGY, IEEE. NEW YORK, US, vol. 10, no. 1, 1992, pages 1 - 5, XP000199268, ISSN: 0733-8724 *
YANGSHENG GAO ET AL: "ATTENUATION-OPTIMIZED DISPERSION-FLATTENED QUADRUPLE-CLAD FIBERS WITH MODERATE F-DOPING IN THE FIRST INNER CLADDING", IEEE PHOTONICS TECHNOLOGY LETTERS, IEEE INC. NEW YORK, US, vol. 4, no. 6, 1 June 1992 (1992-06-01), pages 638 - 641, XP000275552, ISSN: 1041-1135 *

Also Published As

Publication number Publication date
BR9815860A (en) 2001-10-30
EP1081515A1 (en) 2001-03-07
US6532331B1 (en) 2003-03-11
CN1292882A (en) 2001-04-25
AU1686699A (en) 1999-11-23
KR100362626B1 (en) 2002-11-29
CA2330844A1 (en) 1999-11-11
KR20010043155A (en) 2001-05-25
JP4192424B2 (en) 2008-12-10
WO1999057587A1 (en) 1999-11-11
CN1128378C (en) 2003-11-19

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